//lh = line-height,speed = 滚动速度,delay = 多少时间后开始滚动,id = 滚动内容
function startmarquee(lh,speed,delay,id) {
	var t;
	var p = false;
	var o = document.getElementById(id);
	o.innerHTML += o.innerHTML + o.innerHTML + o.innerHTML;
	o.onmouseover = function() {
		p = true;
	}
	o.onmouseout = function() {
		p = false;
	}
	o.scrollTop = 0;

	function start() {
		t = setInterval(scrolling,speed);
		if(!p) o.scrollTop += 2;
	}

	function scrolling() {
		if(o.scrollTop%lh != 0) {
			o.scrollTop += 2;
			if(o.scrollTop >= o.scrollHeight / 2) o.scrollTop = 0;
		} else {
			clearInterval(t);
			setTimeout(start,delay);
		}
	}
	setTimeout(start,delay);
}